On UNIX systems, the stalwart utility tar makes light work of building archives.

在UNIX系统中，可靠的实用程序tar可以用来简化构建存档的工作。

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Boots worn by University of South Florida graduate student Katie Brusché are stained with yellow-brown tar from the Gulf oil spill, as seen under ultraviolet light in a long-exposure photograph.

南佛罗里达大学研究生 Katie Brusché 穿着的一双靴子。

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They accused cigarette makers of hiding information that "light" or "low tar" cigarettes are just as dangerous as other cigarettes.

他们起诉烟草制造商隐瞒了关于清淡型和低焦油型香烟和其他的香烟一样危险的信息。

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It said the law will give the FDA the power to restrict advertising, stop illegal sales of tobacco products, require graphic health warnings that cover the top half of the front and back of cigarette packs, ban misleading health claims such as "light" and "low-tar, " regulate health claims, require disclosure of the contents of tobacco products, require changes in tobacco products.

CNN: Senate passes bill increasing FDA power over tobacco products

Earlier this month, the Alberta government brought out a 20-year plan for the greening of the tar sands, which, while light on details, showed more than the usual resolve.

ECONOMIST: Stephen Harper looks to Washington, not Alberta